Added Docker configuration for notification services, and phoenix services, also, opened up most ports to the host by default.
The current configuration is now working first for a setup of "development mode" environments, anticipating that each service will use the private internal network for most services. That way, you can selectively run things, say, in your OS X environment, and other things in the docker cluster. It can make your debugging a little easier.
When more automation is available, we'll find a way to describe how to handle this in different ways.